<div class="publichead">
    <div class="col-md-2 text-center"><div class="publicheadlogo"></div>
        <span class="title">6C数据中心</span></div>
    <div class="col-md-10" style="padding: 0;">
        <div style="display: inline-block;height: 25px;line-height:25px;padding-left: 10px;border-left: 1px solid #efefef;"><img src="img/index/icon_menu.png" alt=""/></div>
        <div class="pull-right publicheadRight">
           <!--<div class="operator"><img src="img/index/icon_user.png" style="margin-right: 5px;" alt=""/>超级管理员 (中国铁路总公司) <img src="img/index/icon_down2.png" style="margin-left: 5px;" alt=""/></div>-->

            <div class="btn-group" style="float: left">
                <button type="button" class="btn dropdown-toggle operator_btn" aria-haspopup="true" aria-expanded="false">
                    <img src="img/index/icon_user.png" style="margin-right: 5px;" alt=""/>   超级管理员 (中国铁路总公司) <span class="caret"></span>
                </button>
                <div class="exit "></div>
                <ul class="dropdown-menu">
                    <li><a href="#">刘卓然</a></li>
                    <li><a href="#">职务 : 办事员</a></li>
                    <li><a href="#">电话 : 18866668888</a></li>
                    <li><a href="#">部门 : 货车部</a></li>
                </ul>

            </div>

        </div>
    </div>
</div>
<script>
$(".operator_btn").hover(function(){
    $(".dropdown-menu").stop(false,true).slideDown();
},function(){
    $(".dropdown-menu").slideUp();
})
</script>